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342
Monitoring of AC analog measurements
The last value reported (Y1 in figure 184) serves as a basic value for further measure-
ment. A difference is calculated between the last reported and the newly measured value
during new sample and is multiplied by the time increment (discrete integral). The ab-
solute values of these products are added until the pre-set value is exceeded. This occurs
with the value Y2 that is reported and set as a new base for the following measurements
(as well as for the values Y3, Y4 and Y5).
The integrating dead-band supervision is particularly suitable for monitoring signals
with small variations that can last for relatively long periods.
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A1 >=
pre-set value
A >=
pre-set value
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Value Reported
(1st)
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The user can select the periodic reporting of measured value in time intervals between
1 and 3600 s. The measuring channel reports the value even if it has not changed for
more than the set limits of amplitude or integrating dead-band supervision. To disable
periodic reporting, set the reporting time interval to 0 s (figure 185).
A2 >=
pre-set value
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Value
Reported
Value
Reported
Reported
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A3 + A4 + A5 + A6 + A7 >=
pre-set value
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Value
Reported
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